Author Archives: Artiom Lichtenstein
Cisco SVI Sequence Generator
If you ever need to generate a large number of sequential SVI configuration, try this Python script.
It can be easily tweaked for physical interfaces instead of SVIs.
Usage:
./CONFIG_GEN.py {First SVI Number} {Base IP Address/CIDR} {IP Address Octet Number to Rotate} {Last SVI Number} [Additional Config Lines devided by ‘+’]
Examples:
./CONFIG_GEN.py 100 192.168.100.254/24 3 113
./CONFIG_GEN.py 13 10.13.1.254/16 2 17
./CONFIG_GEN.py 13 10.13.1.254/16 2 17 ‘no ip unreachables’
./CONFIG_GEN.py 13 10.13.1.254/16 2 17 ‘no ip unreachables+ip router ospf 1 area 0+no shut’
F5 BIG-IP iRule: GeoLocation and IP Reputation Query
Usage:
http://IP_VIRT/geo?{IPv4_TO_TEST | IPv6_TO_TEST}
Examples:
http://10.100.115.102/geo?8.8.8.8
http://10.100.115.102/geo?199.19.105.220
http://10.100.115.102/geo?2a02:DB8::45
Results:
IPv4 IGP Route Redistribution Mechanics
Just wanted to share the following diagram I made to better understand Route Redistribution:
Key points: